Company Filing History:
Years Active: 1992-1993
Title: C Darwin Williamson: Innovator in Drilling Fluid Technology
Introduction
C Darwin Williamson is a notable inventor based in Sugar Land, TX (US). He has made significant contributions to the field of drilling fluid technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and effectiveness of drilling operations in the oil and gas industry.
Latest Patents
Williamson's latest patents include innovative solutions for drilling fluids. One of his patents is for an acrylamide terpolymer shale stabilizing additive for low viscosity oil. This invention discloses a low viscosity drilling fluid and a method for stabilizing downhole shale formations. The fluid comprises an aqueous solution of a partially transamidated hydrolyzed acrylamide copolymer, potassium chloride, a weighting agent, and an optional viscosifying agent. The copolymer consists of approximately 50 to 98 mole percent primary amide functionality, 0.1 to 15 mole percent secondary amide functionality, and 2 to 50 mole percent of the acrylate salt. The resulting drilling fluid has a density ranging from 8 to 18 pounds per gallon and a viscosity of 5 to 30 centistokes.
Another significant patent by Williamson is related to precipitation control. This composition includes an iron sequestering agent and a ketone-type compound as a sulfide modifier. It is designed to retard the undesirable precipitation of iron and sulfur species from an acid solution as the pH increases. When combined with an acid solution, this precipitation control composition serves as an acidizing composition particularly useful in the acidizing of sour hydrocarbon wells. The method disclosed helps in managing the precipitation of iron and sulfur species effectively.
Career Highlights
Williamson is currently associated with Nalco Chemical Company, where he continues to innovate in the field of chemical solutions for the oil and gas industry. His expertise in drilling fluids and precipitation control has positioned him as a valuable asset in his field.
Collaborations
Throughout his career, Williamson has collaborated with notable colleagues, including Dodd W Fong and Robert K Gabel. These collaborations have contributed to the advancement of technologies in drilling fluid applications.
Conclusion
C Darwin Williamson's contributions to drilling fluid technology through his patents demonstrate his commitment to innovation in the oil and gas sector. His work continues to influence the efficiency of drilling operations